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-rw-r--r--bgpd/bgp_encap_tlv.c993
1 files changed, 993 insertions, 0 deletions
diff --git a/bgpd/bgp_encap_tlv.c b/bgpd/bgp_encap_tlv.c
new file mode 100644
index 0000000..fde1197
--- /dev/null
+++ b/bgpd/bgp_encap_tlv.c
@@ -0,0 +1,993 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2015, LabN Consulting, L.L.C.
+ */
+
+#include <zebra.h>
+
+#include "command.h"
+#include "memory.h"
+#include "prefix.h"
+#include "filter.h"
+#include "stream.h"
+
+#include "bgpd.h"
+#include "bgp_attr.h"
+
+#include "bgp_encap_types.h"
+#include "bgp_encap_tlv.h"
+
+/***********************************************************************
+ * SUBTLV ENCODE
+ ***********************************************************************/
+
+/* rfc5512 4.1 */
+static struct bgp_attr_encap_subtlv *subtlv_encode_encap_l2tpv3_over_ip(
+ struct bgp_tea_subtlv_encap_l2tpv3_over_ip *st)
+{
+ struct bgp_attr_encap_subtlv *new;
+ uint8_t *p;
+ int total = 4 + st->cookie_length;
+
+ /* sanity check */
+ assert(st->cookie_length <= sizeof(st->cookie));
+ assert(total <= 0xff);
+
+ new = XCALLOC(MTYPE_ENCAP_TLV,
+ sizeof(struct bgp_attr_encap_subtlv) + total);
+ assert(new);
+ new->type = BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION;
+ new->length = total;
+ p = new->value;
+
+ *p++ = (st->sessionid & 0xff000000) >> 24;
+ *p++ = (st->sessionid & 0xff0000) >> 16;
+ *p++ = (st->sessionid & 0xff00) >> 8;
+ *p++ = (st->sessionid & 0xff);
+ memcpy(p, st->cookie, st->cookie_length);
+ return new;
+}
+
+/* rfc5512 4.1 */
+static struct bgp_attr_encap_subtlv *
+subtlv_encode_encap_gre(struct bgp_tea_subtlv_encap_gre_key *st)
+{
+ struct bgp_attr_encap_subtlv *new;
+ uint8_t *p;
+ int total = 4;
+
+ assert(total <= 0xff);
+
+ new = XCALLOC(MTYPE_ENCAP_TLV,
+ sizeof(struct bgp_attr_encap_subtlv) + total);
+ assert(new);
+ new->type = BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION;
+ new->length = total;
+ p = new->value;
+
+ *p++ = (st->gre_key & 0xff000000) >> 24;
+ *p++ = (st->gre_key & 0xff0000) >> 16;
+ *p++ = (st->gre_key & 0xff00) >> 8;
+ *p++ = (st->gre_key & 0xff);
+ return new;
+}
+
+static struct bgp_attr_encap_subtlv *
+subtlv_encode_encap_pbb(struct bgp_tea_subtlv_encap_pbb *st)
+{
+ struct bgp_attr_encap_subtlv *new;
+ uint8_t *p;
+ int total = 1 + 3 + 6 + 2; /* flags + isid + madaddr + vid */
+
+ assert(total <= 0xff);
+
+ new = XCALLOC(MTYPE_ENCAP_TLV,
+ sizeof(struct bgp_attr_encap_subtlv) + total);
+ assert(new);
+ new->type = BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION;
+ new->length = total;
+ p = new->value;
+
+ *p++ = (st->flag_isid ? 0x80 : 0) | (st->flag_vid ? 0x40 : 0) | 0;
+ if (st->flag_isid) {
+ *p = (st->isid & 0xff0000) >> 16;
+ *(p + 1) = (st->isid & 0xff00) >> 8;
+ *(p + 2) = (st->isid & 0xff);
+ }
+ p += 3;
+ memcpy(p, st->macaddr, 6);
+ p += 6;
+ if (st->flag_vid) {
+ *p++ = (st->vid & 0xf00) >> 8;
+ *p++ = st->vid & 0xff;
+ }
+ return new;
+}
+
+/* rfc5512 4.2 */
+static struct bgp_attr_encap_subtlv *
+subtlv_encode_proto_type(struct bgp_tea_subtlv_proto_type *st)
+{
+ struct bgp_attr_encap_subtlv *new;
+ uint8_t *p;
+ int total = 2;
+
+ assert(total <= 0xff);
+
+ new = XCALLOC(MTYPE_ENCAP_TLV,
+ sizeof(struct bgp_attr_encap_subtlv) + total);
+ assert(new);
+ new->type = BGP_ENCAP_SUBTLV_TYPE_PROTO_TYPE;
+ new->length = total;
+ p = new->value;
+
+ *p++ = (st->proto & 0xff00) >> 8;
+ *p++ = (st->proto & 0xff);
+ return new;
+}
+
+/* rfc5512 4.3 */
+static struct bgp_attr_encap_subtlv *
+subtlv_encode_color(struct bgp_tea_subtlv_color *st)
+{
+ struct bgp_attr_encap_subtlv *new;
+ uint8_t *p;
+ int total = 8;
+
+ assert(total <= 0xff);
+
+ new = XCALLOC(MTYPE_ENCAP_TLV,
+ sizeof(struct bgp_attr_encap_subtlv) + total);
+ assert(new);
+ new->type = BGP_ENCAP_SUBTLV_TYPE_COLOR;
+ new->length = total;
+ p = new->value;
+
+ *p++ = 0x03; /* transitive*/
+ *p++ = 0x0b;
+ *p++ = 0; /* reserved */
+ *p++ = 0; /* reserved */
+
+ *p++ = (st->color & 0xff000000) >> 24;
+ *p++ = (st->color & 0xff0000) >> 16;
+ *p++ = (st->color & 0xff00) >> 8;
+ *p++ = (st->color & 0xff);
+
+ return new;
+}
+
+/* rfc 5566 4. */
+static struct bgp_attr_encap_subtlv *
+subtlv_encode_ipsec_ta(struct bgp_tea_subtlv_ipsec_ta *st)
+{
+ struct bgp_attr_encap_subtlv *new;
+ uint8_t *p;
+ int total = 2 + st->authenticator_length;
+
+ /* sanity check */
+ assert(st->authenticator_length <= sizeof(st->value));
+ assert(total <= 0xff);
+
+ new = XCALLOC(MTYPE_ENCAP_TLV,
+ sizeof(struct bgp_attr_encap_subtlv) + total);
+ assert(new);
+ new->type = BGP_ENCAP_SUBTLV_TYPE_IPSEC_TA;
+ new->length = total;
+ p = new->value;
+
+ *p++ = (st->authenticator_type & 0xff00) >> 8;
+ *p++ = st->authenticator_type & 0xff;
+ memcpy(p, st->value, st->authenticator_length);
+ return new;
+}
+
+/* draft-rosen-idr-tunnel-encaps 2.1 */
+static struct bgp_attr_encap_subtlv *
+subtlv_encode_remote_endpoint(struct bgp_tea_subtlv_remote_endpoint *st)
+{
+ struct bgp_attr_encap_subtlv *new;
+ uint8_t *p;
+
+ int total = (st->family == AF_INET ? 8 : 20);
+
+ assert(total <= 0xff);
+
+ new = XCALLOC(MTYPE_ENCAP_TLV,
+ sizeof(struct bgp_attr_encap_subtlv) + total);
+ assert(new);
+ new->type = BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT;
+ new->length = total;
+ p = new->value;
+ if (st->family == AF_INET) {
+ memcpy(p, &(st->ip_address.v4.s_addr), IPV4_MAX_BYTELEN);
+ p += IPV4_MAX_BYTELEN;
+ } else {
+ assert(st->family == AF_INET6);
+ memcpy(p, &(st->ip_address.v6.s6_addr), IPV6_MAX_BYTELEN);
+ p += IPV6_MAX_BYTELEN;
+ }
+ memcpy(p, &(st->as4), 4);
+ return new;
+}
+
+/***********************************************************************
+ * TUNNEL TYPE-SPECIFIC TLV ENCODE
+ ***********************************************************************/
+
+/*
+ * requires "extra" and "last" to be defined in caller
+ */
+#define ENC_SUBTLV(flag, function, field) \
+ do { \
+ struct bgp_attr_encap_subtlv *new; \
+ if (CHECK_FLAG(bet->valid_subtlvs, (flag))) { \
+ new = function(&bet->field); \
+ if (last) { \
+ last->next = new; \
+ } else { \
+ attr->encap_subtlvs = new; \
+ } \
+ last = new; \
+ } \
+ } while (0)
+
+void bgp_encap_type_l2tpv3overip_to_tlv(
+ struct bgp_encap_type_l2tpv3_over_ip *bet, /* input structure */
+ struct attr *attr)
+{
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = attr->encap_subtlvs; last && last->next; last = last->next)
+ ;
+
+ attr->encap_tunneltype = BGP_ENCAP_TYPE_L2TPV3_OVER_IP;
+
+ assert(CHECK_FLAG(bet->valid_subtlvs, BGP_TEA_SUBTLV_ENCAP));
+
+ ENC_SUBTLV(BGP_TEA_SUBTLV_ENCAP, subtlv_encode_encap_l2tpv3_over_ip,
+ st_encap);
+ ENC_SUBTLV(BGP_TEA_SUBTLV_PROTO_TYPE, subtlv_encode_proto_type,
+ st_proto);
+ ENC_SUBTLV(BGP_TEA_SUBTLV_COLOR, subtlv_encode_color, st_color);
+ ENC_SUBTLV(BGP_TEA_SUBTLV_REMOTE_ENDPOINT,
+ subtlv_encode_remote_endpoint, st_endpoint);
+}
+
+void bgp_encap_type_gre_to_tlv(
+ struct bgp_encap_type_gre *bet, /* input structure */
+ struct attr *attr)
+{
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = attr->encap_subtlvs; last && last->next; last = last->next)
+ ;
+
+ attr->encap_tunneltype = BGP_ENCAP_TYPE_GRE;
+
+ ENC_SUBTLV(BGP_TEA_SUBTLV_ENCAP, subtlv_encode_encap_gre, st_encap);
+ ENC_SUBTLV(BGP_TEA_SUBTLV_PROTO_TYPE, subtlv_encode_proto_type,
+ st_proto);
+ ENC_SUBTLV(BGP_TEA_SUBTLV_COLOR, subtlv_encode_color, st_color);
+ ENC_SUBTLV(BGP_TEA_SUBTLV_REMOTE_ENDPOINT,
+ subtlv_encode_remote_endpoint, st_endpoint);
+}
+
+void bgp_encap_type_ip_in_ip_to_tlv(
+ struct bgp_encap_type_ip_in_ip *bet, /* input structure */
+ struct attr *attr)
+{
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = attr->encap_subtlvs; last && last->next; last = last->next)
+ ;
+
+ attr->encap_tunneltype = BGP_ENCAP_TYPE_IP_IN_IP;
+
+ ENC_SUBTLV(BGP_TEA_SUBTLV_PROTO_TYPE, subtlv_encode_proto_type,
+ st_proto);
+ ENC_SUBTLV(BGP_TEA_SUBTLV_COLOR, subtlv_encode_color, st_color);
+ ENC_SUBTLV(BGP_TEA_SUBTLV_REMOTE_ENDPOINT,
+ subtlv_encode_remote_endpoint, st_endpoint);
+}
+
+void bgp_encap_type_transmit_tunnel_endpoint(
+ struct bgp_encap_type_transmit_tunnel_endpoint
+ *bet, /* input structure */
+ struct attr *attr)
+{
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = attr->encap_subtlvs; last && last->next; last = last->next)
+ ;
+
+ attr->encap_tunneltype = BGP_ENCAP_TYPE_TRANSMIT_TUNNEL_ENDPOINT;
+
+ /* no subtlvs for this type */
+}
+
+void bgp_encap_type_ipsec_in_tunnel_mode_to_tlv(
+ struct bgp_encap_type_ipsec_in_tunnel_mode *bet, /* input structure */
+ struct attr *attr)
+{
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = attr->encap_subtlvs; last && last->next; last = last->next)
+ ;
+
+ attr->encap_tunneltype = BGP_ENCAP_TYPE_IPSEC_IN_TUNNEL_MODE;
+
+ ENC_SUBTLV(BGP_TEA_SUBTLV_IPSEC_TA, subtlv_encode_ipsec_ta,
+ st_ipsec_ta);
+}
+
+void bgp_encap_type_ip_in_ip_tunnel_with_ipsec_transport_mode_to_tlv(
+ struct bgp_encap_type_ip_in_ip_tunnel_with_ipsec_transport_mode
+ *bet, /* input structure */
+ struct attr *attr)
+{
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = attr->encap_subtlvs; last && last->next; last = last->next)
+ ;
+
+ attr->encap_tunneltype =
+ BGP_ENCAP_TYPE_IP_IN_IP_TUNNEL_WITH_IPSEC_TRANSPORT_MODE;
+
+ ENC_SUBTLV(BGP_TEA_SUBTLV_IPSEC_TA, subtlv_encode_ipsec_ta,
+ st_ipsec_ta);
+}
+
+void bgp_encap_type_mpls_in_ip_tunnel_with_ipsec_transport_mode_to_tlv(
+ struct bgp_encap_type_mpls_in_ip_tunnel_with_ipsec_transport_mode
+ *bet, /* input structure */
+ struct attr *attr)
+{
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = attr->encap_subtlvs; last && last->next; last = last->next)
+ ;
+
+ attr->encap_tunneltype =
+ BGP_ENCAP_TYPE_MPLS_IN_IP_TUNNEL_WITH_IPSEC_TRANSPORT_MODE;
+
+ ENC_SUBTLV(BGP_TEA_SUBTLV_IPSEC_TA, subtlv_encode_ipsec_ta,
+ st_ipsec_ta);
+}
+
+void bgp_encap_type_pbb_to_tlv(
+ struct bgp_encap_type_pbb *bet, /* input structure */
+ struct attr *attr)
+{
+ struct bgp_attr_encap_subtlv *last;
+
+ /* advance to last subtlv */
+ for (last = attr->encap_subtlvs; last && last->next; last = last->next)
+ ;
+
+ attr->encap_tunneltype = BGP_ENCAP_TYPE_PBB;
+
+ assert(CHECK_FLAG(bet->valid_subtlvs, BGP_TEA_SUBTLV_ENCAP));
+ ENC_SUBTLV(BGP_TEA_SUBTLV_ENCAP, subtlv_encode_encap_pbb, st_encap);
+}
+
+void bgp_encap_type_vxlan_to_tlv(
+ struct bgp_encap_type_vxlan *bet, /* input structure */
+ struct attr *attr)
+{
+ struct bgp_attr_encap_subtlv *tlv;
+ uint32_t vnid;
+
+ attr->encap_tunneltype = BGP_ENCAP_TYPE_VXLAN;
+
+ if (bet == NULL || !bet->vnid)
+ return;
+ XFREE(MTYPE_ENCAP_TLV, attr->encap_subtlvs);
+ tlv = XCALLOC(MTYPE_ENCAP_TLV,
+ sizeof(struct bgp_attr_encap_subtlv) + 12);
+ tlv->type = 1; /* encapsulation type */
+ tlv->length = 12;
+ if (bet->vnid) {
+ vnid = htonl(bet->vnid | VXLAN_ENCAP_MASK_VNID_VALID);
+ memcpy(&tlv->value, &vnid, 4);
+ }
+ if (bet->mac_address) {
+ char *ptr = (char *)&tlv->value + 4;
+ memcpy(ptr, bet->mac_address, 6);
+ }
+ attr->encap_subtlvs = tlv;
+ return;
+}
+
+void bgp_encap_type_nvgre_to_tlv(
+ struct bgp_encap_type_nvgre *bet, /* input structure */
+ struct attr *attr)
+{
+ attr->encap_tunneltype = BGP_ENCAP_TYPE_NVGRE;
+}
+
+void bgp_encap_type_mpls_to_tlv(
+ struct bgp_encap_type_mpls *bet, /* input structure */
+ struct attr *attr)
+{
+ return; /* no encap attribute for MPLS */
+}
+
+void bgp_encap_type_mpls_in_gre_to_tlv(
+ struct bgp_encap_type_mpls_in_gre *bet, /* input structure */
+ struct attr *attr)
+{
+ attr->encap_tunneltype = BGP_ENCAP_TYPE_MPLS_IN_GRE;
+}
+
+void bgp_encap_type_vxlan_gpe_to_tlv(
+ struct bgp_encap_type_vxlan_gpe *bet, /* input structure */
+ struct attr *attr)
+{
+
+ attr->encap_tunneltype = BGP_ENCAP_TYPE_VXLAN_GPE;
+}
+
+void bgp_encap_type_mpls_in_udp_to_tlv(
+ struct bgp_encap_type_mpls_in_udp *bet, /* input structure */
+ struct attr *attr)
+{
+
+ attr->encap_tunneltype = BGP_ENCAP_TYPE_MPLS_IN_UDP;
+}
+
+
+/***********************************************************************
+ * SUBTLV DECODE
+ ***********************************************************************/
+/* rfc5512 4.1 */
+static int subtlv_decode_encap_l2tpv3_over_ip(
+ struct bgp_attr_encap_subtlv *subtlv,
+ struct bgp_tea_subtlv_encap_l2tpv3_over_ip *st)
+{
+ if (subtlv->length < 4) {
+ zlog_debug("%s, subtlv length %d is less than 4", __func__,
+ subtlv->length);
+ return -1;
+ }
+
+ ptr_get_be32(subtlv->value, &st->sessionid);
+ st->cookie_length = subtlv->length - 4;
+ if (st->cookie_length > sizeof(st->cookie)) {
+ zlog_debug("%s, subtlv length %d is greater than %d", __func__,
+ st->cookie_length, (int)sizeof(st->cookie));
+ return -1;
+ }
+ memcpy(st->cookie, subtlv->value + 4, st->cookie_length);
+ return 0;
+}
+
+/* rfc5512 4.1 */
+static int subtlv_decode_encap_gre(struct bgp_attr_encap_subtlv *subtlv,
+ struct bgp_tea_subtlv_encap_gre_key *st)
+{
+ if (subtlv->length != 4) {
+ zlog_debug("%s, subtlv length %d does not equal 4", __func__,
+ subtlv->length);
+ return -1;
+ }
+ ptr_get_be32(subtlv->value, &st->gre_key);
+ return 0;
+}
+
+static int subtlv_decode_encap_pbb(struct bgp_attr_encap_subtlv *subtlv,
+ struct bgp_tea_subtlv_encap_pbb *st)
+{
+ if (subtlv->length != 1 + 3 + 6 + 2) {
+ zlog_debug("%s, subtlv length %d does not equal %d", __func__,
+ subtlv->length, 1 + 3 + 6 + 2);
+ return -1;
+ }
+ if (subtlv->value[0] & 0x80) {
+ st->flag_isid = 1;
+ st->isid = (subtlv->value[1] << 16) | (subtlv->value[2] << 8)
+ | subtlv->value[3];
+ }
+ if (subtlv->value[0] & 0x40) {
+ st->flag_vid = 1;
+ st->vid = ((subtlv->value[10] & 0x0f) << 8) | subtlv->value[11];
+ }
+ memcpy(st->macaddr, subtlv->value + 4, 6);
+ return 0;
+}
+
+/* rfc5512 4.2 */
+static int subtlv_decode_proto_type(struct bgp_attr_encap_subtlv *subtlv,
+ struct bgp_tea_subtlv_proto_type *st)
+{
+ if (subtlv->length != 2) {
+ zlog_debug("%s, subtlv length %d does not equal 2", __func__,
+ subtlv->length);
+ return -1;
+ }
+ st->proto = (subtlv->value[0] << 8) | subtlv->value[1];
+ return 0;
+}
+
+/* rfc5512 4.3 */
+static int subtlv_decode_color(struct bgp_attr_encap_subtlv *subtlv,
+ struct bgp_tea_subtlv_color *st)
+{
+ if (subtlv->length != 8) {
+ zlog_debug("%s, subtlv length %d does not equal 8", __func__,
+ subtlv->length);
+ return -1;
+ }
+ if ((subtlv->value[0] != 0x03) || (subtlv->value[1] != 0x0b)
+ || (subtlv->value[2] != 0) || (subtlv->value[3] != 0)) {
+ zlog_debug("%s, subtlv value 1st 4 bytes are not 0x030b0000",
+ __func__);
+ return -1;
+ }
+ ptr_get_be32(subtlv->value + 4, &st->color);
+ return 0;
+}
+
+/* rfc 5566 4. */
+static int subtlv_decode_ipsec_ta(struct bgp_attr_encap_subtlv *subtlv,
+ struct bgp_tea_subtlv_ipsec_ta *st)
+{
+ st->authenticator_length = subtlv->length - 2;
+ if (st->authenticator_length > sizeof(st->value)) {
+ zlog_debug(
+ "%s, authenticator length %d exceeds storage maximum %d",
+ __func__, st->authenticator_length,
+ (int)sizeof(st->value));
+ return -1;
+ }
+ st->authenticator_type = (subtlv->value[0] << 8) | subtlv->value[1];
+ memcpy(st->value, subtlv->value + 2, st->authenticator_length);
+ return 0;
+}
+
+/* draft-rosen-idr-tunnel-encaps 2.1 */
+static int
+subtlv_decode_remote_endpoint(struct bgp_attr_encap_subtlv *subtlv,
+ struct bgp_tea_subtlv_remote_endpoint *st)
+{
+ int i;
+ if (subtlv->length != 8 && subtlv->length != 20) {
+ zlog_debug("%s, subtlv length %d does not equal 8 or 20",
+ __func__, subtlv->length);
+ return -1;
+ }
+ if (subtlv->length == 8) {
+ st->family = AF_INET;
+ memcpy(&st->ip_address.v4.s_addr, subtlv->value,
+ IPV4_MAX_BYTELEN);
+ } else {
+ st->family = AF_INET6;
+ memcpy(&(st->ip_address.v6.s6_addr), subtlv->value,
+ IPV6_MAX_BYTELEN);
+ }
+ i = subtlv->length - 4;
+ ptr_get_be32(subtlv->value + i, &st->as4);
+ return 0;
+}
+
+/***********************************************************************
+ * TUNNEL TYPE-SPECIFIC TLV DECODE
+ ***********************************************************************/
+
+int tlv_to_bgp_encap_type_l2tpv3overip(
+ struct bgp_attr_encap_subtlv *stlv, /* subtlv chain */
+ struct bgp_encap_type_l2tpv3_over_ip *bet) /* caller-allocated */
+{
+ struct bgp_attr_encap_subtlv *st;
+ int rc = 0;
+
+ for (st = stlv; st; st = st->next) {
+ switch (st->type) {
+ case BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION:
+ rc |= subtlv_decode_encap_l2tpv3_over_ip(
+ st, &bet->st_encap);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_ENCAP);
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_PROTO_TYPE:
+ rc |= subtlv_decode_proto_type(st, &bet->st_proto);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_PROTO_TYPE);
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_COLOR:
+ rc |= subtlv_decode_color(st, &bet->st_color);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_COLOR);
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
+ rc |= subtlv_decode_remote_endpoint(st,
+ &bet->st_endpoint);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__,
+ st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}
+
+int tlv_to_bgp_encap_type_gre(
+ struct bgp_attr_encap_subtlv *stlv, /* subtlv chain */
+ struct bgp_encap_type_gre *bet) /* caller-allocated */
+{
+ struct bgp_attr_encap_subtlv *st;
+ int rc = 0;
+
+ for (st = stlv; st; st = st->next) {
+ switch (st->type) {
+ case BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION:
+ rc |= subtlv_decode_encap_gre(st, &bet->st_encap);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_ENCAP);
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_PROTO_TYPE:
+ rc |= subtlv_decode_proto_type(st, &bet->st_proto);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_PROTO_TYPE);
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_COLOR:
+ rc |= subtlv_decode_color(st, &bet->st_color);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_COLOR);
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
+ rc |= subtlv_decode_remote_endpoint(st,
+ &bet->st_endpoint);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__,
+ st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}
+
+int tlv_to_bgp_encap_type_ip_in_ip(
+ struct bgp_attr_encap_subtlv *stlv, /* subtlv chain */
+ struct bgp_encap_type_ip_in_ip *bet) /* caller-allocated */
+{
+ struct bgp_attr_encap_subtlv *st;
+ int rc = 0;
+
+ for (st = stlv; st; st = st->next) {
+ switch (st->type) {
+ case BGP_ENCAP_SUBTLV_TYPE_PROTO_TYPE:
+ rc |= subtlv_decode_proto_type(st, &bet->st_proto);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_PROTO_TYPE);
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_COLOR:
+ rc |= subtlv_decode_color(st, &bet->st_color);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_COLOR);
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
+ rc |= subtlv_decode_remote_endpoint(st,
+ &bet->st_endpoint);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__,
+ st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}
+
+int tlv_to_bgp_encap_type_transmit_tunnel_endpoint(
+ struct bgp_attr_encap_subtlv *stlv,
+ struct bgp_encap_type_transmit_tunnel_endpoint *bet)
+{
+ struct bgp_attr_encap_subtlv *st;
+ int rc = 0;
+
+ for (st = stlv; st; st = st->next) {
+ switch (st->type) {
+
+ case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
+ rc |= subtlv_decode_remote_endpoint(st,
+ &bet->st_endpoint);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__,
+ st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}
+
+int tlv_to_bgp_encap_type_ipsec_in_tunnel_mode(
+ struct bgp_attr_encap_subtlv *stlv, /* subtlv chain */
+ struct bgp_encap_type_ipsec_in_tunnel_mode *bet) /* caller-allocated */
+{
+ struct bgp_attr_encap_subtlv *st;
+ int rc = 0;
+
+ for (st = stlv; st; st = st->next) {
+ switch (st->type) {
+ case BGP_ENCAP_SUBTLV_TYPE_IPSEC_TA:
+ rc |= subtlv_decode_ipsec_ta(st, &bet->st_ipsec_ta);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_IPSEC_TA);
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
+ rc |= subtlv_decode_remote_endpoint(st,
+ &bet->st_endpoint);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__,
+ st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}
+
+int tlv_to_bgp_encap_type_ip_in_ip_tunnel_with_ipsec_transport_mode(
+ struct bgp_attr_encap_subtlv *stlv,
+ struct bgp_encap_type_ip_in_ip_tunnel_with_ipsec_transport_mode *bet)
+{
+ struct bgp_attr_encap_subtlv *st;
+ int rc = 0;
+
+ for (st = stlv; st; st = st->next) {
+ switch (st->type) {
+ case BGP_ENCAP_SUBTLV_TYPE_IPSEC_TA:
+ rc |= subtlv_decode_ipsec_ta(st, &bet->st_ipsec_ta);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_IPSEC_TA);
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
+ rc |= subtlv_decode_remote_endpoint(st,
+ &bet->st_endpoint);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__,
+ st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}
+
+int tlv_to_bgp_encap_type_mpls_in_ip_tunnel_with_ipsec_transport_mode(
+ struct bgp_attr_encap_subtlv *stlv,
+ struct bgp_encap_type_mpls_in_ip_tunnel_with_ipsec_transport_mode *bet)
+{
+ struct bgp_attr_encap_subtlv *st;
+ int rc = 0;
+
+ for (st = stlv; st; st = st->next) {
+ switch (st->type) {
+ case BGP_ENCAP_SUBTLV_TYPE_IPSEC_TA:
+ rc |= subtlv_decode_ipsec_ta(st, &bet->st_ipsec_ta);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_IPSEC_TA);
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
+ rc |= subtlv_decode_remote_endpoint(st,
+ &bet->st_endpoint);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__,
+ st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}
+
+int tlv_to_bgp_encap_type_vxlan(struct bgp_attr_encap_subtlv *stlv,
+ struct bgp_encap_type_vxlan *bet)
+{
+ struct bgp_attr_encap_subtlv *st;
+ int rc = 0;
+
+ for (st = stlv; st; st = st->next) {
+ switch (st->type) {
+
+ case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
+ rc |= subtlv_decode_remote_endpoint(st,
+ &bet->st_endpoint);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__,
+ st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}
+
+int tlv_to_bgp_encap_type_nvgre(struct bgp_attr_encap_subtlv *stlv,
+ struct bgp_encap_type_nvgre *bet)
+{
+ struct bgp_attr_encap_subtlv *st;
+ int rc = 0;
+
+ for (st = stlv; st; st = st->next) {
+ switch (st->type) {
+
+ case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
+ rc |= subtlv_decode_remote_endpoint(st,
+ &bet->st_endpoint);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__,
+ st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}
+
+int tlv_to_bgp_encap_type_mpls(struct bgp_attr_encap_subtlv *stlv,
+ struct bgp_encap_type_mpls *bet)
+{
+ struct bgp_attr_encap_subtlv *st;
+ int rc = 0;
+
+ for (st = stlv; st; st = st->next) {
+ switch (st->type) {
+
+ case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
+ rc |= subtlv_decode_remote_endpoint(st,
+ &bet->st_endpoint);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__,
+ st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}
+
+int tlv_to_bgp_encap_type_mpls_in_gre(struct bgp_attr_encap_subtlv *stlv,
+ struct bgp_encap_type_mpls_in_gre *bet)
+{
+ struct bgp_attr_encap_subtlv *st;
+ int rc = 0;
+
+ for (st = stlv; st; st = st->next) {
+ switch (st->type) {
+
+ case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
+ rc |= subtlv_decode_remote_endpoint(st,
+ &bet->st_endpoint);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__,
+ st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}
+
+int tlv_to_bgp_encap_type_vxlan_gpe(struct bgp_attr_encap_subtlv *stlv,
+ struct bgp_encap_type_vxlan_gpe *bet)
+{
+ struct bgp_attr_encap_subtlv *st;
+ int rc = 0;
+
+ for (st = stlv; st; st = st->next) {
+ switch (st->type) {
+
+ case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
+ rc |= subtlv_decode_remote_endpoint(st,
+ &bet->st_endpoint);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__,
+ st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}
+
+int tlv_to_bgp_encap_type_mpls_in_udp(struct bgp_attr_encap_subtlv *stlv,
+ struct bgp_encap_type_mpls_in_udp *bet)
+{
+ struct bgp_attr_encap_subtlv *st;
+ int rc = 0;
+
+ for (st = stlv; st; st = st->next) {
+ switch (st->type) {
+
+ case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
+ rc |= subtlv_decode_remote_endpoint(st,
+ &bet->st_endpoint);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__,
+ st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}
+
+int tlv_to_bgp_encap_type_pbb(
+ struct bgp_attr_encap_subtlv *stlv, /* subtlv chain */
+ struct bgp_encap_type_pbb *bet) /* caller-allocated */
+{
+ struct bgp_attr_encap_subtlv *st;
+ int rc = 0;
+
+ for (st = stlv; st; st = st->next) {
+ switch (st->type) {
+ case BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION:
+ rc |= subtlv_decode_encap_pbb(st, &bet->st_encap);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_ENCAP);
+ break;
+
+ case BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT:
+ rc |= subtlv_decode_remote_endpoint(st,
+ &bet->st_endpoint);
+ SET_SUBTLV_FLAG(bet, BGP_TEA_SUBTLV_REMOTE_ENDPOINT);
+ break;
+
+ default:
+ zlog_debug("%s: unexpected subtlv type %d", __func__,
+ st->type);
+ rc |= -1;
+ break;
+ }
+ }
+ return rc;
+}